February 4 – Cardinal Sin announces the closure of the National Secretariat for Social Action for the claims of infiltration by communists.[1]
February 27 – Thirteen members of the elite anti-insurgency Scout Rangers are killed in an ambush near Camalig, Albay.[1]
March
March 9 – Amnesty International publishes a report on the cases of human rights violations by the Aquino administration committed by military and paramilitary groups; report is rejected by the government.[1]
March 29 – Eight suspected communists are captured in military raids on their safehouses in Metro Manila—seven in San Juan, including three leading Communist Party of the Philippines (CPP) officials, NPA commander Romulo Kintanar, general secretary Rafael Baylosis, and senior central committee member Benjamin de Vera; and Napoleon Manuel, "logistics officer" for the NPA, in Quezon City.[1][3][4]
September 13 – Generics Act of 1988 (Republic Act No. 6675) was signed by President Aquino in order to require and ensure the production of an adequate supply, distribution, use and acceptance of drugs and medicines identified by their generic name.[12]
October 23–24 – Typhoon Unsang struck into Luzon resulted in a widespread flooding and landslides. The storm and flood brought scores of fatalities.[15]
November 7 – The Tower of Power transmitter was inaugurated by President Aquino and GMA Network board of directors following the transmitter's opening and a musical special.
December
December 13 – A military court acquits former Col. Rolando Abadilla, Manila's security chief under the administration of Pres. Marcos and then Ilocos Norte vice-governor, of charges of plotting coup attempts against President Aquino.[7]
Date unknown
May – Abante established as a second post-revolution tabloid newspaper.
As per Executive Order No. 292, chapter 7 section 26, the following are regular holidays and special days, approved on July 25, 1987.[17] Note that in the list, holidays in bold are "regular holidays," and those in italics are "nationwide special days".
^Sciolino, Elaine (October 18, 1988). "U.S. and Philippines Sign Pact on Bases". The New York Times - Breaking News, US News, World News and Videos. Archived from the original on May 25, 2015. Retrieved April 6, 2021.